add a lib directory; move smarty into it; add random_compat phar (for random_bytes() on PHP < 7)

lib/smarty/libs/sysplugins/smarty_internal_method_clearassign.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Smarty Method ClearAssign
+ *
+ * Smarty::clearAssign() method
+ *
+ * @package    Smarty
+ * @subpackage PluginsInternal
+ * @author     Uwe Tews
+ */
+class Smarty_Internal_Method_ClearAssign
+{
+    /**
+     * Valid for all objects
+     *
+     * @var int
+     */
+    public $objMap = 7;
+
+    /**
+     * clear the given assigned template variable(s).
+     *
+     * @api  Smarty::clearAssign()
+     * @link http://www.smarty.net/docs/en/api.clear.assign.tpl
+     *
+     * @param \Smarty_Internal_Data|\Smarty_Internal_Template|\Smarty $data
+     * @param  string|array                                           $tpl_var the template variable(s) to clear
+     *
+     * @return \Smarty_Internal_Data|\Smarty_Internal_Template|\Smarty
+     */
+    public function clearAssign(Smarty_Internal_Data $data, $tpl_var)
+    {
+        if (is_array($tpl_var)) {
+            foreach ($tpl_var as $curr_var) {
+                unset($data->tpl_vars[ $curr_var ]);
+            }
+        } else {
+            unset($data->tpl_vars[ $tpl_var ]);
+        }
+
+        return $data;
+    }
+}